compareLinkedlistRecursion

bool compare_lists(SinglyLinkedListNode* head1, SinglyLinkedListNode* head2) {
    if (head1->data != head2->data )  return 0 ;
    if ( head1->next == nullptr  && head2->next == nullptr ) return 1;
    if ( head1->next == nullptr  && head2->next != NULL ) return 0 ;
    if (head2->next == NULL && head1->next != NULL) return 0;
    return compare_lists(head1->next,  head2->next);

}